1 files changed, 120 insertions, 0 deletions
diff --git a/chrome/installer/util/install_util.cc b/chrome/installer/util/install_util.cc
new file mode 100644
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+++ b/chrome/installer/util/install_util.cc
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+// Copyright 2008, Google Inc.
+// All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+//
+// See the corresponding header file for description of the functions in this
+// file.
+
+#include "install_util.h"
+
+#include <windows.h>
+
+#include "base/logging.h"
+#include "base/registry.h"
+#include "base/string_util.h"
+#include "chrome/installer/util/google_update_constants.h"
+
+
+std::wstring InstallUtil::FormatLastWin32Error() {
+  unsigned messageid = GetLastError();
+  wchar_t* string_buffer = NULL;
+  unsigned string_length = ::FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |
+      FORMAT_MESSAGE_FROM_SYSTEM | FORMAT_MESSAGE_IGNORE_INSERTS,
+      NULL, messageid, 0, reinterpret_cast<wchar_t *>(&string_buffer), 0, NULL);
+
+  std::wstring formatted_string;
+  if (string_buffer) {
+    formatted_string = string_buffer;
+    LocalFree(reinterpret_cast<HLOCAL>(string_buffer));
+  } else {
+    // The formating failed. simply convert the message value into a string.
+    SStringPrintf(&formatted_string, L"message number %d", messageid);
+  }
+  return formatted_string;
+}
+
+
+std::wstring InstallUtil::GetChromeGoogleUpdateKey() {
+  std::wstring chrome_google_update_key(google_update::kRegPathClients);
+  chrome_google_update_key.append(L"\\");
+  chrome_google_update_key.append(google_update::kChromeGuid);
+  return chrome_google_update_key;
+}
+
+installer::Version* InstallUtil::GetChromeVersion(bool system_install) {
+  RegKey key;
+  std::wstring version_str;
+
+  HKEY reg_root = (system_install) ? HKEY_LOCAL_MACHINE : HKEY_CURRENT_USER;
+  if (!key.Open(reg_root, GetChromeGoogleUpdateKey().c_str(), KEY_READ) ||
+      !key.ReadValue(google_update::kRegVersionField, &version_str)) {
+    LOG(INFO) << "No existing Chrome install found.";
+    key.Close();
+    return NULL;
+  }
+  key.Close();
+  LOG(INFO) << "Existing Chrome version found " << version_str;
+  return installer::Version::GetVersionFromString(version_str);
+}
+
+std::wstring InstallUtil::GetNewGoogleUpdateApKey(bool diff_install,
+    installer_util::InstallStatus status, const std::wstring& value) {
+  // Magic suffix that we need to add or remove to "ap" key value.
+  const std::wstring kMagicSuffix = L"-full";
+
+  bool has_magic_string = false;
+  if ((value.length() >= kMagicSuffix.length()) &&
+      (value.rfind(kMagicSuffix) == (value.length() - kMagicSuffix.length()))) {
+    LOG(INFO) << "Incremental installer failure key already set.";
+    has_magic_string = true;
+  }
+
+  std::wstring new_value(value);
+  if ((!diff_install || InstallSuccessful(status)) && has_magic_string) {
+    LOG(INFO) << "Removing failure key from value " << value;
+    new_value = value.substr(0, value.length() - kMagicSuffix.length());
+  } else if ((diff_install && !InstallSuccessful(status)) &&
+             !has_magic_string) {
+    LOG(INFO) << "Incremental installer failed, setting failure key.";
+    new_value.append(kMagicSuffix);
+  }
+
+  return new_value;
+}
+
+bool InstallUtil::InstallSuccessful(installer_util::InstallStatus status) {
+  switch (status) {
+    case installer_util::FIRST_INSTALL_SUCCESS:
+    case installer_util::INSTALL_REPAIRED:
+    case installer_util::NEW_VERSION_UPDATED:
+    case installer_util::HIGHER_VERSION_EXISTS:
+      return true;
+    default:
+      return false;
+  }
+}